Suat Gumussoy


Bio

Dr. Gumussoy received his B.S. degrees in Electrical & Electronics Engineering and Mathematics from Middle East Technical University at Turkey in 1999 and M.S., Ph.D. degrees in Electrical and Computer Engineering from The Ohio State University at USA in 2001 and 2004. His graduate study is focused on robust control design and time-delay systems. He worked as a system engineer in electronic self-protection system design for F-16 aircrafts at Mikes Inc., New York (2005-2007) and a software quality engineer in MATLAB control toolboxes at MathWorks, Natick (2007-2008). He was a postdoctoral researcher in Computer Science Department at University of Leuven, Belgium (2008-2011). He is currently principal control system engineer in Controls & Identification Team at MathWorks. Dr. Gumussoy's general research interests are control, learning, optimization and scientific computing with particular focus on reinforcement learning, optimal-adaptive control, frequency domain system identification, time-delay systems and their numerical implementations.

Contact Info



Software

    • @ New York University, Courant Institute of Mathematical Sciences: MATLAB toolbox for fixed-order controller design (HIFOO)
      • fixed-order stabilization, strong stabilization, simultaneous stabilization
      • fixed-order H, H2 optimization
      • fixed-order complex stability radius, stability margin (spectral abscissa), robust stability margin (pseudospectral abscissa) optimization
      • HIFOO handles mixed problems and multiple plants, for example, optimizing the H performance of some plants subject to constraints on H2 performance of other plants

    Research

    • Reinforcement learning and optimal-adaptive control
    • Frequency domain system identification and model reduction
    • Control for multiprocessor architecture and wearable devices
    • Analysis and control of time-delay systems

    Publications

    Book Chapters

    [BC4]  S. Gumussoy and W. Michiels
              Tuning an H-Infinity Controller with a Given Order and a Structure for Interconnected Systems with Delays
              Low-Complexity Controllers for Time-Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 95-110, Springer, 2014. chapter ]

    [BC3]  S. Gumussoy and P. Gahinet
              Computer Aided Control System Design for Time Delay Systems using MATLAB
              Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 257-270, Springer, 2013. chapter ]

    [BC2]  W. Michiels and S. Gumussoy
              Eigenvalue based algorithms and software for the design of fixed-order stabilizing controllers for interconnected systems with time-delays
              Delay Systems, Advances in Delays and Dynamics (edited volume), pp. 243-256, Springer, 2013. chapter ]

    [BC1]  S. Gumussoy
    and W. Michiels
              Fixed-order H-infinity Optimization of Time-Delay Systems
              Recent Advances in Optimization and its Applications in Engineering (edited volume), pp. 103-112, Springer, 2010. [ preprint ] [ chapter ]

    Journal Papers


    [J15] M. Abu-Khalaf and S. Gumussoy
             Parameterization and Computation of the Kernels in the Cost Functional for the System with Distributed Delays
             Submitted to Automatica, 2017.

    [J14] S. Gumussoy and M. Abu-Khalaf
             Analytic Solution of a Delay differential Equation Arising in Cost Functionals for System with Distributed Delays
             In review at Transactions on Automatic Control, 2017.

    [J13] G. Bhat, S. Gumussoy and U. Y. Ogras
             Power-Temperature Stability and Safety Analysis for Multiprocessor Systems
             ACM Transactions on Embedded Computing Systems, vol. 16, no. 5, pp. 145:1-20, 2017. preprint ] paper ] 

    [J12]  S. Gumussoy and W. Michiels
             Computation of extremum singular values and the strong H-infinity norm of SISO time-delay systems
             Automatica, vol. 54, pp. 266-271, 2015. preprint ] paper ] 

    [J11]  S. Gumussoy and W. Michiels
             Root-Locus for SISO Dead-Time Systems: A Continuation Based Approach
             Automatica, vol. 48, no. 3, pp. 480-489, 2012. 
    [ preprint ] [ paper ] 

    [J10]
      T. D. Quoc, S. Gumussoy, W. Michiels and M. Diehl
             Combining Convex-Concave Decomposition and Linearization Approaches for Static Feedback Controller Design (Regular Paper)
             
    IEEE Transactions on Automatic Control, vol. 57, no. 6, pp. 1377-1390, 2012. preprint ] paper ] 

    [J9]    S. Gumussoy
             Coprime Inner/Outer Factorization of SISO Time-Delay Systems and FIR Structure of Their Optimal H-Infinity Controllers
             International Journal of Robust and Nonlinear Control, vol. 22, no. 9, pp. 981-998, 2012. 
    preprint ] paper ]

    [J8]    S. Gumussoy and W. Michiels
             Fixed-Order H-infinity Control for Interconnected Systems using Delay Differential Algebraic Equations
             SIAM Journal on Control and Optimization, vol. 49, no. 2, pp. 2212-2238, 2011. 
    preprint ] 
    paper ]

    [J7]    S. Gumussoy
             Relative Stability Analysis of Closed-Loop SISO Dead-Time Systems: Non-imaginary Axis Case
             Transactions of the Institute of Measurement and Control, vol. 34, no. 4, pp. 411-421, 2011. [ preprint ] [ paper ]

    [J6]    W. Michiels and S. Gumussoy

             Characterization and Computation of H-infinity Norms for Time-Delay Systems
             SIAM Journal on Matrix Analysis and Applications, vol. 31, no. 4, pp. 2093-2115, 2010. [ preprint ] [ paper ]

    [J5]    S. Gumussoy and W. Michiels

             A Predictor-Corrector Type Algorithm for the Pseudospectral Abscissa Computation of Time-Delay Systems (Regular Paper)
             Automatica, vol. 46, no. 4, pp. 657-664, 2010. [ preprint ] [ paper ]

    [J4]    S. Gumussoy and H. Ozbay

             Sensitivity Minimization by Strongly Stabilizing Controllers for a Class of Unstable Time-Delay Systems
             IEEE Transactions on Automatic Control, vol. 54, no. 3, pp. 590-595, 2009. [ preprint ] [ paper ]
    [J3]    S. Gumussoy and H. Ozbay
             Stable H-infinity Controller Design for Time-Delay Systems
             International Journal of Control, vol. 81, no. 4, pp. 546-556, 2008. [ preprint ] [ paper ]
    [J2]    S. Gumussoy and H. Ozbay
             Remarks on Strong Stabilization and Stable H-infinity Controller Design
             IEEE Transactions on Automatic Control, vol. 50, no. 12, pp. 2083-2087, 2005. [ preprint ] [ paper ]
    [J1]    S. Gumussoy and H. Ozbay
             On the Mixed Sensitivity Minimization for Systems with Infinitely Many Unstable Modes
             Systems and Control Letters, vol. 53, no. 3-4, pp. 211-216, 2004. [ preprint ] [ paper ]

    Conference Proceedings and Abstracts

    [C26]  G. Bhat, S. Gumussoy and U. Y. Ogras
              Power-Temperature Stability and Safety Analysis for Multiprocessor Systems
              54th Design Automation Conference, Austin, Texas, USA, June 18-22, 2017. [ paper ]

    [C25]  A. A. Ozdemir  and S. Gumussoy
              Transfer Function Estimation in System Identification Toolbox via Vector Fitting
              20th IFAC World Congress, Toulouse, France, July 9-14, 2017. [ paper ]

    [C24]  U. Gupta, J. Campbell, U. Y. Ogras, R. Ayoub, M. Kishinevsky, F. Paterna and S. Gumussoy
              Adaptive Performance Prediction for Integrated GPUs
              International Conference on Computer-Aided Design (ICCAD), Austin, USA, November 7-10, 2016. [ paper ]

    [C23]  S. Gumussoy, B. Eryilmaz and P. Gahinet
              Working with Time-Delay Systems in MATLAB
              10th IFAC Workshop on Time-Delay Systems, Boston, USA, June 22-24, 2012. [ paper ]

    [C22]  W. Michiels and S. Gumussoy
              Eigenvalue based Analysis and Controller Synthesis for Systems described by Delay Differential Algebraic Equations
              10th IFAC Workshop on Time-Delay Systems, Boston, USA, June 22-24, 2012. [ paper ]

    [C21]  S. Gumussoy and W. Michiels
              Direct Strong H-infinity Norm Computation for SISO Time-Delay Systems (invited session)
              3rd International Conference on Control and Optimization with Industrial Applications, Ankara, Turkey, August 22-24, 2011. [ extended abstract ]

    [C20]  D. Arzelier, G. Deaconu, S. Gumussoy and D. Henrion
              H2 for HIFOO (invited session)
              3rd International Conference on Control and Optimization with Industrial Applications, Ankara, Turkey, August 22-24, 2011. [ extended abstract ] [ paper ]

    [C19]  S. Gumussoy and W. Michiels
              Fixed-order strong H-infinity control of interconnected systems with time-delay (minisymposium)
              Proceedings of the 18th IFAC World Congress, Milano, Italy, August 28-September 2, 2011. [ paper ]

    [C18]  S. Gumussoy and W. Michiels
              On the sensitivity of the H-infinity norm of interconnected systems with time-delays (minisymposium)
              Proceedings of the 18th IFAC World Congress, Milano, Italy, August 28-September 2, 2011. [ paper ]

    [C17]  S. Gumussoy and W. Michiels
              Continuation Based
    Computation of Root-Locus for SISO Dead-Time Systems
              Proceedings of the 9th IFAC Workshop on Time-Delay Systems, 2010. [ paper ]

    [C16]  S. Gumussoy and W. Michiels
              Computing H-infinity Norms of Time-Delay Systems
              Proceedings of the 48th IEEE Conference on Decision and Control, pp. 263-268, 2009. [ paper ]

    [C15]  S. Gumussoy and W. Michiels
              Fixed-Order H-infinity Optimization of Time-Delay Systems
              14th Belgian-French-German Conference on Optimization, 2009. [ extended abstract ]

    [C14]  S. Gumussoy and W. Michiels
              Computing the Pseudospectral Abscissa of Time-Delay Systems
              Proceedings of the 8th IFAC Workshop on Time-Delay Systems, 2009. [ paper ]

    [C13]  S. Gumussoy, D. Henrion, M. Millstone and M. L. Overton,
              Multiobjective robust control with HIFOO 2.0
              Proceedings of the 6th IFAC Symposium on Robust Control Design, 2009. [ paper ]

    [C12]  S. Gumussoy and W. Michiels
              Computing H-infinity Norms of Time-Delay Systems
              28th Benelux Meeting on Systems and Control, 2009. [ extended abstract ]
    [C11]  S. Gumussoy, M. Millstone and M. L. Overton
              H-infinity Strong Stabilization via HIFOO, a Package for Fixed-Order Controller Design
              Proceedings of the 47th IEEE Conference on Decision and Control, pp. 4135-4140 , 2008. [ paper ]
    [C10]  S. Gumussoy, M. Millstone and M. L. Overton
              Design of Fixed-Order Controllers via Nonsmooth Optimization
              SIAM Conference on Optimization, Boston, MA, 2008. [ abstract ]
    [C9]    S. Gumussoy
              On the Zeros of Quasi-Polynomials with Single-Delay
              Proceedings of the American Control Conference, pp. 5282-5286, 2008. [ paper ]
    [C8]    S. Gumussoy and M. L. Overton
              Fixed-Order H-Infinity Controller Design via HIFOO, a Specialized Nonsmooth Optimization Package
              Proceedings of the American Control Conference, pp. 2750-2754, 2008. [ paper ]
    [C7]    S. Gumussoy and H. Ozbay
              Sensitivity Minimization by Stable Controllers: An Interpolation Approach for Suboptimal Solutions
              Proceedings of the 46th IEEE Conference on Decision and Control, pp. 6071-6076, 2007. [ paper ]
    [C6]    S. Gumussoy and H. Ozbay
              Sensitivity minimization by stable controllers for a class of unstable time-delay systems
              Proceedings of the 9th International Conference on Control, Automation, Robotics and Vision, pp. 1-5, 2006. [ paper ]
    [C5]    H. Ozbay and S. Gumussoy
              Remarks on H-infinity Controller Design for SISO Plants with Time Delays
              Proceedings of the 5th IFAC Symposium on Robust Control Design, 2006. [ paper ]

    [C4]    S. Gumussoy and H. Ozbay
              Remarks on Strong Stabilization and Stable H-infinity Controller Design
              Proceedings of the 43rd IEEE Conference on Decision and Control, vol. 3, pp. 2621-2624, 2004. [ paper ]

    [C3]    S. Gumussoy and H. Ozbay
              On Stable H-infinity Controllers for Time Delay Systems
              Proceedings of 16th International Symposium on Mathematical Theory of Network and Systems, 2004. [ paper ]
    [C2]    M. Saglam, S. Ezercan, S. Gumussoy and H. Ozbay
              Controller tuning for active queue management using a parameter space method
              Proceedings of the 16th International Symposium on Mathematical Theory of Network and Systems, 2004. [ paper ]

    [C1]    S. Gumussoy and H. Ozbay
              Control of Systems with Infinitely Many Unstable Modes and Strong Stabilizing Controllers Achieving a Desired Sensitivity
              Proceedings of the 15th International Symposium on Mathematical Theory of Network and Systems, pp. 1-10, 2002. [ paper ]

    PhD Thesis

    S. Gumussoy
    Optimal H-infinity controller design and strong stabilization for time-delay and mimo systems (ohiolink)
    Doctor of Philosophy, Ohio State University, Electrical Engineering, 2004.

    Webinar

    [W]    S. Gumussoy
             MathWorks, December 4, 2012.

    Blog

    [B]     P. Gahinet, S. Gumussoy, E. Korkut and M. Cuenant
             MathWorks, April 3, 2014.